History of chemical industry

Fine chemical industry

On the other hand, reactive dyes were invented to combine dyes with fibers in chemical bonds. Synthetic fibers and their blends require new dyes, such as active disperse dyes for polyester, acrylic, and poly-cotton blends. In addition, there are special dyes for laser, liquid crystal, microscopic technology and so on. In the 1940s, after Switzerland P.H. Miller invented the first organochlorine pesticides, he developed a series of organochlorines and organophosphorus, which have special effects such as stomach killing, contact killing, and internal absorption. Later, it requires high efficiency and low toxicity or no residual toxicity of pesticides, such as bionic synthesis. In the 1960s, the development is very fast, there are some good varieties, such as pyridine herbicides, benzimidazole fungicides and so on. In addition, there are antibiotic pesticides (see), such as Jinggangmycin developed in China in 1976 to combat rice sheath blight. In medicine,

In 1910, France made 606 arsenic preparation (a special drug for the radical cure of melesin), and the structure was improved to make 914 and 30 years of compounds, steroids and other are from the structure of the improvement, play a special effect. In 1928, the British discovery, opened up a new field of antimicrobial drugs. Later research on the successful treatment of physiological diseases, such as cardiovascular disease, psychiatric drugs, and contraceptives. In addition, a number of specific diagnostic drugs are available. Get rid of the tradition of natural paint, use, such as alkyd resin, acrylic resin, etc., to meet the needs of the automotive industry and other advanced coating. After the Second World War, styrene butadiene latex was made into water-based coatings and became a large variety of architectural coatings. The use of new technologies such as high pressure airless spraying, electrostatic spraying, electrophoretic coating, cathodic electrodeposition coating, and light curing (see) can save labor and materials, and thus develop the corresponding coating varieties.